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SUMMARY:Operator Algebras: Approximation\, Rigidity and Dynamics\, Paris
DTSTART:20260914T063000Z
DTEND:20261204T153000Z
DTSTAMP:20260416T210700Z
UID:indico-event-14373@indico.math.cnrs.fr
CONTACT:OA2026@ihp.fr
DESCRIPTION: \nThematic trimester programme with short courses\, seminars
  and workshops\nSeptember 14th to December 4th\, 2026 at the Institut Henr
 i Poincaré\, Paris\nREGISTRATION IS FREE AND MANDATORY\nClick here to reg
 ister for the trimester\nIMPORTANT WARNING:  Scam / Phishing / SMiShing 
 ! Note that ill-intentioned people may be trying to contact some of partic
 ipants by email or phone to get money and personal details\, by pretending
  to be part of the staff of the conference center.  IHP and the organizer
 s will NEVER contact you by phone on this issue and will NEVER ask you to 
 pay for accommodation/ board / possible registration fee in advance. \nDe
 adline for financial support request is March 15\, 2026\nOperator algebras
  are self-adjoint subalgebras of the bounded operators on a Hilbert space 
 and divide into two main classes: C∗-algebras and von Neumann algebras\,
  according to whether one demands that they are closed in the norm topolog
 y or the weak operator topology. When one first meets these algebras\, the
 y might look quite similar\, but they have different natures as exemplifie
 d by the commutative case: via the Gelfand transform\, abelian C∗-algebr
 as are algebras of continuous functions vanishing at infinity on a locally
  compact Hausdorff space\, while abelian von Neumann algebras are essentia
 lly bounded measurable functions on a measure space. These flavours persis
 t in general. Topological concepts such as dimension and invariants such a
 s K-theory pervade the study of C∗-algebras\, while measure-theoretic st
 yle methods are often used to study von Neumann algebras.\nThe long themat
 ic program OA will focus on operator algebras and its still evolving inter
 actions with ergodic theory\, topological dynamics\, discrete subgroups of
  semisimple Lie groups\, analytic\, ergodic and geometric group theory\, q
 uantum information theory and random matrices.\n \nSeptember 14th to 18th
 \, 2026 — Introductory school: Operator Algebras and interactions at IES
 C (Cargèse):\nA separate (free) registration is needed for the school:Lin
 k to registration\nSeptember 28 to October 2 — Workshop 1 - Operator Alg
 ebras: Groups and Dynamics\nOctober 26 to 30 — Workshop 2 - Operator Alg
 ebras: Matricial Approximations\nNovember 30 to December 4 — Workshop 3 
 - Operator Algebras: Rigidity and Classification \nOrganising committee:\
 n\nCyril Houdayer (Ecole normale supérieure)\nMikael de la Salle (CNRS\, 
 Université Claude Bernard Lyon 1)\nStuart White (University of Oxford)\n\
 nScientific committee:\n\nNadia Larsen (University of Oslo)\nMagdalena Mus
 at (University of Copenhagen)\nGilles Pisier (Sorbonne Université\, Acad
 émie des Sciences)\nStefaan Vaes (KU Leuven)\n\n \nBack to the thematic 
 trimester main page \n------------------------------------\nProgramme coo
 rdinated by the Centre Emile Borel at IHP\n \nSorbonne Université\, CNRS
 \n\nhttps://indico.math.cnrs.fr/event/14373/
LOCATION:Amphitheater Darboux/Hermite (IHP)
URL:https://indico.math.cnrs.fr/event/14373/
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